Change default body text color

The default body text of all of our confluence pages is RGB(51,51,51) . This is sort of problematic because while editing people will change fonts to colors and then try to change them back to what they beleive is the default color, black. But the default color is not black its RGB(51,51,51)....

I don't see anywhere in the Color Scheme settings to change the body text color. Any suggestions here? We want it to be black RGB(0,0,0)